Exponential transform of C(n,8) = A000581.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =1a(9) =9a(10) =45a(11) =165a(12) =495a(13) =1287a(14) =3003a(15) =6435a(16) =19305a(17) =243100a(18) =3981978a(19) =49959702a(20) =498967170a(21) =4190469570a(22) =30728937690a(23) =201931408074